Week5 （July 29 - August 04）

Last week：

1. Improve update hot topic/node method.
2. Add topic edit and review page.
3. Add repy edit page.
4. Enable mod members to manage the community more easily.
5. Change member avatar storage method.
6. Improve delete reply function.
7. Add phone signup.
8. Improve DB struct.
9. Improve QQ login.
10. Improve css.

Fix many bugs.

Next week：

1. Add QQ login/signup method.
2. Add top topic.
3. Add balance related leaderboard.
4. Add delete topic function.
5. More functions related to phone.

Find and Fix more bugs.